/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/Widgets/SNiagaraFilterBox.h
The template tab box offers buttons (working like tabs or radio buttons) for filtering purposes. It is used for emitters and systems to filter between standard assets, templates and behavior examples.
class SNiagaraTemplateTabBox : public [SCompoundWidget](API\Runtime\SlateCore\Widgets\SCompoundWidget)